142540347 has 18 divisors (see below), whose sum is σ = 194945556. Its totient is φ = 92641920.

The previous prime is 142540339. The next prime is 142540369. The reversal of 142540347 is 743045241.

It is not a de Polignac number, because 142540347 - 2³ = 142540339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142540327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1261363 + ... + 1261475.

Almost surely, 2^142540347 is an apocalyptic number.

142540347 is a deficient number, since it is larger than the sum of its proper divisors (52405209).

142540347 is an frugal number, since it uses more digits than its factorization.

142540347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 142540347 is about 11939.0262165723. The cubic root of 142540347 is about 522.3712549565.

Adding to 142540347 its reverse (743045241), we get a palindrome (885585588).

The spelling of 142540347 in words is "one hundred forty-two million, five hundred forty thousand, three hundred forty-seven".